import pytest
import core.pacing as pacing_mod
from core.pacing import Pacer
@pytest.mark.asyncio
async def test_pacer_disabled_no_sleep(monkeypatch):
calls = []
async def fake_sleep(seconds: float):
calls.append(seconds)
monkeypatch.setattr(pacing_mod.asyncio, "sleep", fake_sleep)
p = Pacer(rate_per_sec=0)
await p.wait()
await p.wait()
assert calls == []
@pytest.mark.asyncio
async def test_pacer_enforces_min_interval(monkeypatch):
calls = []
# Provide a sequence of monotonic times; when exhausted return the last value
times_iter = iter([0.0, 0.1, 0.5])
def fake_monotonic():
try:
return next(times_iter)
except StopIteration:
# Return the final known time if monkeypatch calls monotonic again
return 0.5
async def fake_sleep(seconds: float):
calls.append(seconds)
monkeypatch.setattr(pacing_mod.time, "monotonic", fake_monotonic)
monkeypatch.setattr(pacing_mod.asyncio, "sleep", fake_sleep)
p = Pacer(rate_per_sec=2.0) # min interval = 0.5 sec
await p.wait() # sets next_allowed = 0.5
await p.wait() # sleeps 0.4
assert pytest.approx(calls[0], rel=1e-6) == 0.4
